Overlay update and fix for ATR-19427

Merged Stewart Martin-Haugh requested to merge smh/athena:overlay_update into master

Apply @apolici's fix for ATR-19427 and also update the overlay file version to account for the change. See !23501 (closed).

Needs expert intervention to get the reference updated to match: I generated one here:


from the most recent nightly.



Edited by Stewart Martin-Haugh

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